CN202736515U - Cold-resistant and rat-and-ant-proof control cable - Google Patents

Abstract

The utility model discloses a cold-resistant and rat-and-ant-proof control cable. The control cable comprises two inner conductors and a plurality of outer conductors, wherein the two inner conductors and the plurality of outer conductors are separately wrapped with a butyronityile insulating layer and thus inner insulating cores and outer insulating cores are formed; the outer sides of the inner insulating cores are moulded through plastic extrusion to form a polyurethane elastomer anti-compression layer; the plurality of outer insulating cores are uniformly distributed around the periphery of the polyurethane elastomer anti-compression layer to commonly from a cable core; the outside of the cable core is provided with a lapping layer; and the outside of the lapping layer is provided with a rat-and-ant-proof butyronityile protective sheath layer. The computer cable has a reasonable structural design. The inner insulating cores of the cable are moulded in the anti-compression layer through plastic extrusion, so that when the cable is extruded from the outside, a buffer effect is generated between the inner conductors and the outer conductors, phenomena of core breaking are reduced, and the smoothness of the transmissions of electric power and communication is guaranteed.

Description

A cold-resistant rodent-proof control cable

Technical field:

The utility model relates to a control cable, in particular to a cold-resistant rodent-proof control cable.

Background technique:

Wire and cable polyvinyl chloride (PVC), polyethylene (PE) and other plastic sheath materials, in addition to being damaged by the environment such as oxygen, heat, light, force, chemical erosion, etc., will also be affected by termites, mice or hares. Erosion and other biological damage, causing power outages, communication interruptions, short circuits and even fires.

For the control cables of cables against rodents and ants, the cable conductors are often damaged due to external extrusion, causing power outages, communication interruptions, and bringing heavy losses to enterprises.

Utility model content:

In order to make up for the defects of the prior art, the purpose of the utility model is to provide a cold-resistant rodent-proof control cable, which has a reasonable structural design and improves the anti-extrusion performance of the cable.

The technical scheme of the utility model is as follows:

The cold-resistant rodent-proof control cable includes two inner conductors and several outer conductors. Insulated wire core, the polyurethane elastomer anti-pressure layer is extruded on the outside of the inner insulated wire core, and the several outer insulated wire cores are evenly distributed on the outer periphery of the polyurethane elastic body anti-pressure layer to form a cable core. There is a wrapping layer, and there is a rodent-proof cold-resistant nitrile sheath layer outside the wrapping layer.

The cold-resistant rodent-proof and ant-proof control cable is characterized in that: the wrapping layer is wrapped with high-temperature-resistant glass fiber tape to form an inner layer, and the fire-resistant mica tape is wrapped to form an outer layer.

The cold-resistant rodent-proof control cable is characterized in that: the overlapping rate of the inner layer of the wrapping layer is not less than 25%, and the overlapping rate of the outer layer is not less than 35%.

The utility model has the advantages of:

The utility model has a reasonable structural design. By extruding the inner insulating wire core of the cable into the pressure-resistant layer, the inner conductor and the outer conductor play a buffer role when being squeezed by the outside, reducing the phenomenon of broken cores and ensuring Unobstructed power and communication transmission.

Description of drawings:

Fig. 1 is the structural representation of the utility model.

Detailed ways:

See Figure 1:

Cold-resistant rodent-proof control cable, including two inner conductors 1, several outer conductors 2, the outer sides of the two inner conductors 1 and several outer conductors 2 are respectively wrapped with a nitrile insulating layer 3 to form an inner insulated core and an outer insulated wire core, the polyurethane elastomer anti-pressure layer 4 is extruded on the outside of the inner insulated wire core, and several outer insulated wire cores are evenly distributed on the outer periphery of the polyurethane elastomer anti-pressure layer 4 to form a cable core, and the cable core is provided with a wrapping layer 5 , a rodent-proof and cold-resistant nitrile sheath layer 6 is provided around the cladding layer 6 .

The wrapping layer 5 is wrapped with high-temperature-resistant glass fiber tape to form the inner layer 5-1, and the refractory mica tape is wrapped to form the outer layer 5-2.

The wrapping overlapping rate of the inner layer 5-1 of the wrapping layer is not less than 25%, and the wrapping overlapping rate of the outer layer 5-2 is not less than 35%.

Features and main parameters:

Voltage level (KV): 0.45/0.75

Pressure test (KV/min): 3.0/5

Conductor long-term allowable maximum operating temperature (°C): 105

Insulation resistance 20℃(Ω.km):≥25

Termite test (knockdown method): KT95 time ≤ 350min

                                                                                      100%

Cable bending radius (mm): 10 times the cable diameter.

Claims (3)

1. A cold-resistant rodent-proof control cable, comprising two inner conductors and several outer conductors, characterized in that: the outsides of the two inner conductors and several outer conductors are respectively wrapped with nitrile insulating layers to form inner insulation Wire core, outer insulated wire core, polyurethane elastomer anti-pressure layer formed by extruding the outside of the inner insulated wire core, and the several outer insulated wire cores are evenly distributed on the outer periphery of the polyurethane elastomer anti-pressure layer to form a cable core , The cable core is provided with a wrapping layer, and the wrapping layer is provided with a rodent-proof cold-resistant nitrile sheath layer. 2. The cold-resistant rodent-proof and ant-proof control cable according to claim 1, characterized in that: the wrapping layer is wrapped with high-temperature-resistant glass fiber tape to form an inner layer, and the fire-resistant mica tape is wrapped to form an outer layer. 3. The cold-resistant rodent-proof control cable according to claim 1, characterized in that: the overlapping rate of the inner layer of the wrapping layer is not less than 25%, and the overlapping rate of the outer layer is not less than 35%.

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